From 87d0b698a83ea58659e82a5f4fc0993f514c2eeb Mon Sep 17 00:00:00 2001
From: toni-santos <a.oliveirasantos122@gmail.com>
Date: Thu, 17 Oct 2024 18:55:49 +0100
Subject: [PATCH] start getting information from schedule to the homepage

---
 content-scripts/index.js                      |  2 +
 content-scripts/modules/homepage-schedule.tsx | 89 +++++++++++++++++++
 content-scripts/types.ts                      |  6 ++
 3 files changed, 97 insertions(+)
 create mode 100644 content-scripts/modules/homepage-schedule.tsx

diff --git a/content-scripts/index.js b/content-scripts/index.js
index d701920..9fbe601 100644
--- a/content-scripts/index.js
+++ b/content-scripts/index.js
@@ -18,6 +18,7 @@ import { fixPagination } from "./modules/pagination";
 import { changeLayout } from "./modules/layout";
 import { addStarIconToCard } from "./modules/favorite-course";
 import { createComponentsPage } from "./pages/components_page";
+import { addMainPageSchedule } from "./modules/homepage-schedule";
 
 /*--
 - Docs: https://developer.chrome.com/docs/extensions/reference/storage/#synchronous-response-to-storage-updates
@@ -51,6 +52,7 @@ const functionsToExecute = [
     { name: "injectOverrideFunctions", func: injectOverrideFunctions },
     { name: "addStarIconToCard", func: addStarIconToCard },
     { name: "componentsPage", func: createComponentsPage },
+    { name: "addMainPageSchedule", func: addMainPageSchedule },
 ];
 
 const init = async () => {
diff --git a/content-scripts/modules/homepage-schedule.tsx b/content-scripts/modules/homepage-schedule.tsx
new file mode 100644
index 0000000..4ac4195
--- /dev/null
+++ b/content-scripts/modules/homepage-schedule.tsx
@@ -0,0 +1,89 @@
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+import jsx from "texsaur";
+import { getUP } from "./utilities/sigarra";
+import { Lecture } from "../types";
+
+// TODO: probably move this somewhere else
+const getWeek: (date: Date) => number = function (date) {
+    const newYear = new Date(date.getFullYear(), 0, 1);
+    let day = newYear.getDay(); //the day of week the year begins on
+    day = day >= 0 ? day : day + 7;
+    const daynum =
+        Math.floor(
+            (date.getTime() -
+                newYear.getTime() -
+                (date.getTimezoneOffset() - newYear.getTimezoneOffset()) *
+                    60000) /
+                86400000,
+        ) + 1;
+    let weeknum;
+    //if the year starts before the middle of a week
+    if (day < 4) {
+        weeknum = Math.floor((daynum + day - 1) / 7) + 1;
+        if (weeknum > 52) {
+            const nYear = new Date(date.getFullYear() + 1, 0, 1);
+            let nday = nYear.getDay();
+            nday = nday >= 0 ? nday : nday + 7;
+            /*if the next year starts before the middle of
+                the week, it is week #1 of that year*/
+            weeknum = nday < 4 ? 1 : 53;
+        }
+    } else {
+        weeknum = Math.floor((daynum + day - 1) / 7);
+    }
+    return weeknum;
+};
+
+const Schedule: (up: string) => Element = (up) => {
+    const current_year: number = new Date().getFullYear();
+
+    const schedule_url: (up: string) => string = (up: string) =>
+        `https://sigarra.up.pt/feup/pt/hor_geral.estudantes_view?pv_num_unico=${up}&pv_ano_lectivo=${current_year}&pv_periodos=1`;
+
+    return (
+        <iframe
+            src={schedule_url(up)}
+            width="100%"
+            height="100%"
+            frameBorder="0"
+            scrolling="auto"
+            style="display: none;"
+            id="main-page-schedule"
+        />
+    );
+};
+
+export const addMainPageSchedule = async () => {
+    const up = getUP();
+    const schedule = Schedule(up);
+    document.body.appendChild(schedule);
+
+    const scheduleIframe = document.getElementById(
+        "main-page-schedule",
+    ) as HTMLIFrameElement;
+
+    const json = await new Promise((resolve) => {
+        scheduleIframe.onload = resolve;
+        return;
+    }).then(async () => {
+        const api_url = scheduleIframe?.contentWindow?.document
+            .getElementById("cal-shadow-container")
+            ?.getAttribute("data-evt-source-url");
+
+        const res = await fetch(api_url as string);
+        return res.json();
+    });
+
+    const weeks_map: Map<number, Array<Lecture>> = new Map();
+    json.data.forEach((lecture: Lecture) => {
+        const start = getWeek(new Date(lecture.start));
+        if (weeks_map.has(start)) {
+            weeks_map.get(start)?.push(lecture);
+        } else {
+            weeks_map.set(start, [lecture]);
+        }
+    });
+
+    // TODO: create the actual schedule element
+    console.log(weeks_map);
+};
diff --git a/content-scripts/types.ts b/content-scripts/types.ts
index 7d22d29..441e25e 100644
--- a/content-scripts/types.ts
+++ b/content-scripts/types.ts
@@ -3,3 +3,9 @@ export type AuthSession = {
     name: string;
     hasNotifications: boolean;
 };
+
+// TODO: Add more types as needed
+export type Lecture = {
+    ucs: Array<object>;
+    start: string;
+};